What type of electrical wiring allows for flexible configurations?

Non-metallic sheathed cable is the correct type of electrical wiring that allows for flexible configurations. This type of wiring, often referred to as NM cable or Romex, consists of two or more insulated conductors and a grounding conductor, all encased in a flexible plastic sheath. The design of non-metallic sheathed cable makes it easy to maneuver and install in various settings, such as residential buildings. It can be easily bent and routed around obstacles, which is particularly advantageous in spaces with changing layouts or configurations.

In terms of practicality, non-metallic sheathed cable is lightweight and does not require additional conduit for protection in most indoor applications, simplifying installation and allowing for quick adjustments. This adaptability makes it a preferred choice for scenarios where wiring arrangements may need to evolve over time.

Other types of wiring, such as conduit wiring and armored cable, provide necessary protection and durability but are typically more rigid and can have limitations regarding flexible installation. Low-voltage wiring is designed for specific applications involving lower voltages, like security systems or outdoor lighting, rather than general use throughout a building. Thus, for projects needing flexible electrical configurations, non-metallic sheathed cable stands out as the most suitable option.